Improvement in knife-sharpener



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page 'eine Letters Patent No. 97,090, dated November 23, 1869.

IMPROVEMENT IN KNIFE-SHARPENER.

The Schedule referred to in these Letters Patent and making part of the same.

To all 'whom/'it may concern:

Beit known that I, W. H. HOWLAND, of San Francisco, in theV county of Sau Francisco, and State of California, have invented a new and useful Improvement in Knife-Sharpeners; and I do hereby declare that the following is a full,.clear, and exact description thereof, which will enable others skilled in the art to rnake and use the saine, reference being had to the accompanying drawings, 'forming' part of' this'specitication.

This invention relates to a new and useful improvement in an article for sharpening knives, whereby that necessary operation is greatly facilitated; and

It consists ,in the employment of two conical disks, composed of emery, or of soine-.equivaleut grindingcomposition or material, secured together in a suitable staudor support, by means of a scre'wor bolt, ashereinafter more fully described.

In the accompanying drawinglfigure l represents a vertical-section of the sharp ener.

Figure 2 is a horizontal section, through the lille x a; pttig. l.

Similar letters of reference indicate corresponding parts.

A represents a stand or support, formed of two parts, B and C, which are secured together b y a central screw, D. Y

This stand may he made of wood, porcelain, or metal, or of any other suitable material.

Between these two part-s, B and C, I 'secure two conical emerydisks, E and F.

'lhese disks or wheels are placed in recesses in the together, and form a sharp angle, as seen in the drawing.

`The blade of thc kuit'e to be'sharpened is'drawn through this angle. If the edge is blunt, the emery will cut away the met-al on each side, until it is made sharp.

As the blade is drawn through between the disks, force is exerted upon it by pressing it into the angle, so that the emery surfaces will take hold of the sides of the blade and form a perfect edge.l

The face of the disks instead of being rounded, as

seen in the drawing, maybe flat, or present a straight line from the periphery to the flat parallel surfaces around the centre, but I prefer the rounded surface, as represented.

In case the part C is made of porcelain, (or should it be made of \vood,) a metallic nut maybe let into it with which thescrew will engage.

This screw may extend entirely through the upper part, as well as through the lower, with a uut on either end.

The lower portion, B, may form a hell, so that the article may be used as a combined knife-sharpener and table-bell.

The disksfE F may be removed as often as may be required.

The form of the sharpener may be round, as represented in iig. 2, or made in any other desired form.

I do not -couue myself to any particular form or size, or style of finish.

Having thus described my invention,

That I claim as new, and' de'sire to secure by Letters Patent, is-

The disks E F, holder B C, and screw D, constructed and arranged as described, and for the purpose specified. 4

IV. H. HOWLAND.

Witnesses Guo. W. Marsan, ALEX. ll. RoBnR'rs. 

